title: The deposition of Au-Pt core-shell nanoparticles on reduced graphene oxide and their catalytic activity.
abstract: Au-Pt core-shell nanoparticles have been synthesized on a reduced graphene oxide (RGO) surface by an under-potential deposition (UPD) redox replacement technique, which involves redox replacement of a copper UPD monolayer by PtCl₄²⁻ that could be reduced and deposited simultaneously. Scanning electron microscopy (SEM) and electrochemical methods have been used to characterize the graphene decorated with Au-Pt core-shell nanoparticles. The electrochemical experiments show that the materials exhibit excellent catalytic activity towards the oxygen reduction reaction and the methanol oxidation reaction. It is believed that the high-performance of this new catalyst is due to the ultrathin Pt shell on the Au nanoparticles surface and the oxygen-containing functional groups on the RGO surface.
authors.affiliation: College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, People's Republic of China.
authors.forename: Xiu
authors.initials: X
authors.lastname: Cui
authors.forename: Shengnan
authors.initials: S
authors.lastname: Wu
authors.forename: Scott
authors.initials: S
authors.lastname: Jungwirth
authors.forename: Zhibing
authors.initials: Z
authors.lastname: Chen
authors.forename: Zhenghua
authors.initials: Z
authors.lastname: Wang
authors.forename: Lun
authors.initials: L
authors.lastname: Wang
authors.forename: Yongxin
authors.initials: Y
authors.lastname: Li